9pcs Hex Allen Key Set ( Imperial )
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- Made of 6150 CR-Vsteel ;
- Fully hardened heat treatment, surface chrome-plating, bright atomizedtreatment,strong rust- resistance , the torque value exceeds the National Standard above 30% ;
- The product hardness is HRC46~50HRC;
- Size: 1/16, 5/64, 3/32, 1/8, 5/32, 3/16, 1/4, 5/16, 3/8 inch .
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